Hi guys, just wondering if anyone else is experiencing this problem - basically I have a hard drive full of films (USB, not on PC hard drive) which I can play from no problem at all. I imported the movies from there into iTunes 11 and they show under "Home Movies" but if I try to play one iTunes freezes instantly and will only end by going through task manager.

Any ideas? All the movies are MP4 and play fine in every other program.